Mercurial > hg > orthanc-stone

annotate Framework/Viewport/WebAssemblyViewport.cpp @ 1346:df8bf351c23f broker

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The flag that allows the WebAssemblyViewport to **not** register the mouse events in the canvas (in case they are handled by other means) is now correctly passed down from the factory method.
author Benjamin Golinvaux <bgo@osimis.io>
date Mon, 06 Apr 2020 16:57:56 +0200
parents ab81ee8fce1f
children 1b8e37770d78
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1 /**
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2 * Stone of Orthanc
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3 * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics
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4 * Department, University Hospital of Liege, Belgium
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5 * Copyright (C) 2017-2020 Osimis S.A., Belgium
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6 *
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7 * This program is free software: you can redistribute it and/or
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8 * modify it under the terms of the GNU Affero General Public License
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9 * as published by the Free Software Foundation, either version 3 of
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10 * the License, or (at your option) any later version.
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11 *
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12 * This program is distributed in the hope that it will be useful, but
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13 * WITHOUT ANY WARRANTY; without even the implied warranty of
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14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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15 * Affero General Public License for more details.
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16 *
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17 * You should have received a copy of the GNU Affero General Public License
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18 * along with this program. If not, see <http://www.gnu.org/licenses/>.
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19 **/
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20
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21
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22 #include "WebAssemblyViewport.h"
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23
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24 #include "../Toolbox/GenericToolbox.h"
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25
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26 #include <Core/OrthancException.h>
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27
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28 #include <boost/make_shared.hpp>
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29 #include <boost/enable_shared_from_this.hpp>
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30
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31 namespace OrthancStone
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32 {
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33 static void ConvertMouseEvent(PointerEvent& target,
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34 const EmscriptenMouseEvent& source,
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35 const ICompositor& compositor)
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36 {
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37 int x = static_cast<int>(source.targetX);
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38 int y = static_cast<int>(source.targetY);
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39
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40 switch (source.button)
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41 {
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42 case 0:
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43 target.SetMouseButton(MouseButton_Left);
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44 break;
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45
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46 case 1:
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47 target.SetMouseButton(MouseButton_Middle);
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48 break;
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49
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50 case 2:
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51 target.SetMouseButton(MouseButton_Right);
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52 break;
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53
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54 default:
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55 target.SetMouseButton(MouseButton_None);
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56 break;
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57 }
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58
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59 target.AddPosition(compositor.GetPixelCenterCoordinates(x, y));
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60 target.SetAltModifier(source.altKey);
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61 target.SetControlModifier(source.ctrlKey);
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62 target.SetShiftModifier(source.shiftKey);
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63 }
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64
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65
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66 class WebAssemblyViewport::WasmLock : public ILock
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67 {
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68 private:
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69 WebAssemblyViewport& that_;
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70
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71 public:
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72 WasmLock(WebAssemblyViewport& that) :
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73 that_(that)
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74 {
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75 }
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76
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77 virtual bool HasCompositor() const ORTHANC_OVERRIDE
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78 {
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79 return that_.compositor_.get() != NULL;
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80 }
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81
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82 virtual ICompositor& GetCompositor() ORTHANC_OVERRIDE
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83 {
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84 if (that_.compositor_.get() == NULL)
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85 {
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86 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadSequenceOfCalls);
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87 }
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88 else
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89 {
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90 return *that_.compositor_;
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91 }
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92 }
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93
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94 virtual ViewportController& GetController() ORTHANC_OVERRIDE
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95 {
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96 assert(that_.controller_);
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97 return *that_.controller_;
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98 }
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99
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100 virtual void Invalidate() ORTHANC_OVERRIDE
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101 {
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102 that_.Invalidate();
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103 }
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104 };
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105
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106
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107 EM_BOOL WebAssemblyViewport::OnRequestAnimationFrame(double time, void *userData)
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108 {
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109 LOG(TRACE) << __func__;
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110 WebAssemblyViewport* that = reinterpret_cast<WebAssemblyViewport*>(userData);
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111
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112 if (that->compositor_.get() != NULL &&
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113 that->controller_ /* should always be true */)
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114 {
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115 that->Paint(*that->compositor_, *that->controller_);
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116 }
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117
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118 LOG(TRACE) << "Exiting: " << __func__;
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119 return true;
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120 }
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121
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122 EM_BOOL WebAssemblyViewport::OnResize(int eventType, const EmscriptenUiEvent *uiEvent, void *userData)
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123 {
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124 LOG(TRACE) << __func__;
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125 WebAssemblyViewport* that = reinterpret_cast<WebAssemblyViewport*>(userData);
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126
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127 if (that->compositor_.get() != NULL)
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128 {
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129 that->UpdateSize(*that->compositor_);
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130 that->Invalidate();
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131 }
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132
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133 LOG(TRACE) << "Exiting: " << __func__;
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134 return true;
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135 }
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136
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137
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138 EM_BOOL WebAssemblyViewport::OnMouseDown(int eventType, const EmscriptenMouseEvent *mouseEvent, void *userData)
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139 {
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140 WebAssemblyViewport* that = reinterpret_cast<WebAssemblyViewport*>(userData);
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141
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142 LOG(TRACE) << "mouse down: " << that->GetFullCanvasId();
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143
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144 if (that->compositor_.get() != NULL &&
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145 that->interactor_.get() != NULL)
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146 {
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147 PointerEvent pointer;
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148 ConvertMouseEvent(pointer, *mouseEvent, *that->compositor_);
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149
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150 that->controller_->HandleMousePress(*that->interactor_, pointer,
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151 that->compositor_->GetCanvasWidth(),
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152 that->compositor_->GetCanvasHeight());
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153 that->Invalidate();
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154 }
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155
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156 LOG(TRACE) << "Exiting: " << __func__;
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157 return true;
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158 }
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159
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160
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161 EM_BOOL WebAssemblyViewport::OnMouseMove(int eventType, const EmscriptenMouseEvent *mouseEvent, void *userData)
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162 {
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163 WebAssemblyViewport* that = reinterpret_cast<WebAssemblyViewport*>(userData);
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164
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165 if (that->compositor_.get() != NULL &&
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166 that->controller_->HasActiveTracker())
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167 {
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168 PointerEvent pointer;
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169 ConvertMouseEvent(pointer, *mouseEvent, *that->compositor_);
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170 if (that->controller_->HandleMouseMove(pointer))
1050
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171 {
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172 that->Invalidate();
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173 }
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174 }
956
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175
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176 LOG(TRACE) << "Exiting: " << __func__;
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177 return true;
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178 }
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179
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180 EM_BOOL WebAssemblyViewport::OnMouseUp(int eventType, const EmscriptenMouseEvent *mouseEvent, void *userData)
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181 {
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182 LOG(TRACE) << __func__;
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183 WebAssemblyViewport* that = reinterpret_cast<WebAssemblyViewport*>(userData);
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184
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185 if (that->compositor_.get() != NULL)
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186 {
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187 PointerEvent pointer;
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188 ConvertMouseEvent(pointer, *mouseEvent, *that->compositor_);
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189 that->controller_->HandleMouseRelease(pointer);
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190 that->Invalidate();
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191 }
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192
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193 LOG(TRACE) << "Exiting: " << __func__;
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194 return true;
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195 }
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196
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197 void WebAssemblyViewport::Invalidate()
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198 {
1331
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199 emscripten_request_animation_frame(OnRequestAnimationFrame, reinterpret_cast<void*>(this));
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200 }
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201
1232
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202 void WebAssemblyViewport::AcquireCompositor(ICompositor* compositor /* takes ownership */)
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203 {
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204 if (compositor == NULL)
942
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205 {
1232
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206 throw Orthanc::OrthancException(Orthanc::ErrorCode_NullPointer);
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207 }
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diff changeset
208 else
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209 {
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diff changeset
210 compositor_.reset(compositor);
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211 }
942
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diff changeset
212 }
907
722ee73e6ba2 cleanup + started to implement WebAssemblyCairoViewport (wip)
Alain Mazy <alain@mazy.be>
parents: 891
diff changeset
213
1318
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diff changeset
214 WebAssemblyViewport::WebAssemblyViewport(
1346
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diff changeset
215 const std::string& canvasId, bool enableEmscriptenMouseEvents) :
1232
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diff changeset
216 shortCanvasId_(canvasId),
1318
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diff changeset
217 fullCanvasId_(canvasId),
1331
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diff changeset
218 interactor_(new DefaultViewportInteractor),
1346
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diff changeset
219 enableEmscriptenMouseEvents_(enableEmscriptenMouseEvents)
1331
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diff changeset
220 {
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parents: 1328
diff changeset
221 }
ab81ee8fce1f - Viewport is not passed and stored as a shared_ptr instead
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parents: 1328
diff changeset
222
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diff changeset
223 void WebAssemblyViewport::PostConstructor()
907
722ee73e6ba2 cleanup + started to implement WebAssemblyCairoViewport (wip)
Alain Mazy <alain@mazy.be>
parents: 891
diff changeset
224 {
1331
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diff changeset
225 boost::shared_ptr<IViewport> viewport = shared_from_this();
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diff changeset
226 controller_.reset(new ViewportController(viewport));
1232
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diff changeset
227
1331
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diff changeset
228 LOG(INFO) << "Initializing Stone viewport on HTML canvas: "
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diff changeset
229 << shortCanvasId_;
907
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parents: 891
diff changeset
230
1331
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diff changeset
231 if (shortCanvasId_.empty() ||
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diff changeset
232 shortCanvasId_[0] == '#')
1232
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diff changeset
233 {
a28861abf888 viewports for WebAssembly
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diff changeset
234 throw Orthanc::OrthancException(Orthanc::ErrorCode_ParameterOutOfRange,
1331
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diff changeset
235 "The canvas identifier must not start with '#'");
1232
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diff changeset
236 }
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diff changeset
237
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diff changeset
238 // Disable right-click on the canvas (i.e. context menu)
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diff changeset
239 EM_ASM({
1331
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diff changeset
240 document.getElementById(UTF8ToString($0)).oncontextmenu =
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parents: 1328
diff changeset
241 function(event)
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diff changeset
242 {
1232
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diff changeset
243 event.preventDefault();
a28861abf888 viewports for WebAssembly
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diff changeset
244 }
a28861abf888 viewports for WebAssembly
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parents: 1054
diff changeset
245 },
1331
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diff changeset
246 shortCanvasId_.c_str() // $0
1232
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diff changeset
247 );
a28861abf888 viewports for WebAssembly
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diff changeset
248
1346
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diff changeset
249 // It is not possible to monitor the resizing of individual
df8bf351c23f The flag that allows the WebAssemblyViewport to
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diff changeset
250 // canvas, so we track the full window of the browser
df8bf351c23f The flag that allows the WebAssemblyViewport to
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parents: 1331
diff changeset
251 emscripten_set_resize_callback(EMSCRIPTEN_EVENT_TARGET_WINDOW,
df8bf351c23f The flag that allows the WebAssemblyViewport to
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diff changeset
252 reinterpret_cast<void*>(this),
df8bf351c23f The flag that allows the WebAssemblyViewport to
Benjamin Golinvaux <bgo@osimis.io>
parents: 1331
diff changeset
253 false,
df8bf351c23f The flag that allows the WebAssemblyViewport to
Benjamin Golinvaux <bgo@osimis.io>
parents: 1331
diff changeset
254 OnResize);
df8bf351c23f The flag that allows the WebAssemblyViewport to
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parents: 1331
diff changeset
255
df8bf351c23f The flag that allows the WebAssemblyViewport to
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parents: 1331
diff changeset
256 if (enableEmscriptenMouseEvents_)
1331
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diff changeset
257 {
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diff changeset
258
1331
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diff changeset
259 emscripten_set_mousedown_callback(fullCanvasId_.c_str(),
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diff changeset
260 reinterpret_cast<void*>(this),
ab81ee8fce1f - Viewport is not passed and stored as a shared_ptr instead
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parents: 1328
diff changeset
261 false,
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diff changeset
262 OnMouseDown);
1232
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diff changeset
263
1331
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diff changeset
264 emscripten_set_mousemove_callback(fullCanvasId_.c_str(),
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parents: 1328
diff changeset
265 reinterpret_cast<void*>(this),
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266 false,
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267 OnMouseMove);
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268
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269 emscripten_set_mouseup_callback(fullCanvasId_.c_str(),
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270 reinterpret_cast<void*>(this),
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271 false,
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272 OnMouseUp);
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273 }
907
722ee73e6ba2 cleanup + started to implement WebAssemblyCairoViewport (wip)
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parents: 891
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274 }
722ee73e6ba2 cleanup + started to implement WebAssemblyCairoViewport (wip)
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parents: 891
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275
1331
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276 WebAssemblyViewport::~WebAssemblyViewport()
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277 {
1346
df8bf351c23f The flag that allows the WebAssemblyViewport to
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278 emscripten_set_resize_callback(EMSCRIPTEN_EVENT_TARGET_WINDOW,
df8bf351c23f The flag that allows the WebAssemblyViewport to
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parents: 1331
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279 reinterpret_cast<void*>(this),
df8bf351c23f The flag that allows the WebAssemblyViewport to
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280 false,
df8bf351c23f The flag that allows the WebAssemblyViewport to
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parents: 1331
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281 NULL);
df8bf351c23f The flag that allows the WebAssemblyViewport to
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282
df8bf351c23f The flag that allows the WebAssemblyViewport to
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diff changeset
283 if (enableEmscriptenMouseEvents_)
1331
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284 {
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parents: 1328
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285
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286 emscripten_set_mousedown_callback(fullCanvasId_.c_str(),
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parents: 1328
diff changeset
287 reinterpret_cast<void*>(this),
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Benjamin Golinvaux <bgo@osimis.io>
parents: 1328
diff changeset
288 false,
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parents: 1328
diff changeset
289 OnMouseDown);
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diff changeset
290
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291 emscripten_set_mousemove_callback(fullCanvasId_.c_str(),
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diff changeset
292 reinterpret_cast<void*>(this),
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parents: 1328
diff changeset
293 false,
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parents: 1328
diff changeset
294 OnMouseMove);
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parents: 1328
diff changeset
295
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296 emscripten_set_mouseup_callback(fullCanvasId_.c_str(),
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diff changeset
297 reinterpret_cast<void*>(this),
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Benjamin Golinvaux <bgo@osimis.io>
parents: 1328
diff changeset
298 false,
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parents: 1328
diff changeset
299 OnMouseUp);
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300 }
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parents: 1328
diff changeset
301 }
1232
a28861abf888 viewports for WebAssembly
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1054
diff changeset
302
a28861abf888 viewports for WebAssembly
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1054
diff changeset
303 IViewport::ILock* WebAssemblyViewport::Lock()
910
a6c12fe88bcb wip: WebAssemblyCairoViewport: still need to implement blit to canvas
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parents: 907
diff changeset
304 {
1232
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305 return new WasmLock(*this);
910
a6c12fe88bcb wip: WebAssemblyCairoViewport: still need to implement blit to canvas
Alain Mazy <alain@mazy.be>
parents: 907
diff changeset
306 }
1232
a28861abf888 viewports for WebAssembly
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1054
diff changeset
307
a28861abf888 viewports for WebAssembly
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1054
diff changeset
308 void WebAssemblyViewport::AcquireInteractor(IViewportInteractor* interactor)
910
a6c12fe88bcb wip: WebAssemblyCairoViewport: still need to implement blit to canvas
Alain Mazy <alain@mazy.be>
parents: 907
diff changeset
309 {
1232
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Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1054
diff changeset
310 if (interactor == NULL)
a28861abf888 viewports for WebAssembly
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parents: 1054
diff changeset
311 {
a28861abf888 viewports for WebAssembly
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1054
diff changeset
312 throw Orthanc::OrthancException(Orthanc::ErrorCode_NullPointer);
a28861abf888 viewports for WebAssembly
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1054
diff changeset
313 }
a28861abf888 viewports for WebAssembly
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1054
diff changeset
314 else
a28861abf888 viewports for WebAssembly
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1054
diff changeset
315 {
a28861abf888 viewports for WebAssembly
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1054
diff changeset
316 interactor_.reset(interactor);
a28861abf888 viewports for WebAssembly
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1054
diff changeset
317 }
910
a6c12fe88bcb wip: WebAssemblyCairoViewport: still need to implement blit to canvas
Alain Mazy <alain@mazy.be>
parents: 907
diff changeset
318 }
891
0aff28f15ea2 new abstraction: IViewport
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
319 }